[llvm] [DAG] Add computeKnownBits(FREEZE(X)) handling (PR #214095)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp --diff_from_common_commit
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``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 40a8b647c..8a7e2700f 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3389,9 +3389,9 @@ KnownBits SelectionDAG::computeKnownBits(SDValue Op, const APInt &DemandedElts,
   unsigned Opcode = Op.getOpcode();
   switch (Opcode) {
   case ISD::FREEZE: {
-    if(isGuaranteedNotToBeUndefOrPoison(Op.getOperand(0), DemandedElts,
-                                        UndefPoisonKind::UndefOrPoison))
-        Known = computeKnownBits(Op.getOperand(0), DemandedElts, Depth + 1);
+    if (isGuaranteedNotToBeUndefOrPoison(Op.getOperand(0), DemandedElts,
+                                         UndefPoisonKind::UndefOrPoison))
+      Known = computeKnownBits(Op.getOperand(0), DemandedElts, Depth + 1);
     break;
   }
   case ISD::MERGE_VALUES:

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https://github.com/llvm/llvm-project/pull/214095